Means for removing soot and sparks from smoke passing through flues.



J. MoLAUGHLIN. MEANS FOR REMOVING 800T AND SPARKS PROM SMOKE PASSINGTHROUGH FLUES.

APPLIGATION FILED MAY 9 1908.

931,788. Patented Aug. 24, 1909.

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UNITED STATES PATEN orrroa.

JOHN MCLAUGHLIN, OF OTTAWA, ONTARIO, CANADA.

MEANS FOR REMOVING SOOT AND SPARKSFROIVI SMOKE PASSING THROUGH FLUES.

Specification of Letters Patent.

Application filed May 9, 1908. Serial No. 431,973.

To all whom it may concern:

Be it known that I, JOHN MGLAUGHLIN, of the city of Ottawa, in thecounty of Carleton, Province of Ontario, Canada, have invented certainnew and useful Improvements in Means for Removing Soot and Sparks fromSmoke Passing Through Flues, of which the following is a specification.

My invention relates to improvements in means for removing soot andsparks from smoke passing through flues, and the objects of my inventionare to provide simple and effective means, which will extinguish thesparks passing through a boiler or other flue, and which will alsoseparate and withdraw the majority of the soot particles, therebyeliminating the issuing of the heavy black smoke from the chimney, andpreventing any danger to surrounding buildings by live sparks carried inthe smoke. These objects are accomplished by providing a plurality ofopen conduits in the flue, through which water circulates, the saidwater being adapted to catch and carry away the sparks and sootparticles. The water also operates further to produce a small quantityof steam, which changes the color of the smoke.

The construction of the invention is described more fully hereinafter inthe accompanying specification and drawings.

In the drawings, Figure 1 is an elevation of the apparatus. Fig. 2 is asection on the line 22, Fig. 1. Fig. 3 is a section on the line 33, Fig.2. Fig. 4 is an enlarged sectional detail through one of the watercarrying conduits. Fig. 5 is a sectional detail of a locking dog on adoor on the flue.

Referring to the drawings, A represents a boiler of any suitableconstruction, B the chimney thereof and C a flue extending between. Thisfiue, in accordance with my invention, is provided with a singleenlarged chamber D, medially within which, a plurality of series of openconduits E, F and G are provided, the conduits in each series beingserpentine in form, and being staggered with reference to the conduitsin the other series. The tops of the conduits are open in order toenable the smoke to contact with the surface of the water therein, andin the embodiment illustrated, these conduits are made substantiallyU-shaped in form, as shown more particularly in Fig. 4:. Each of theseries are connected together by conduct- .ing pipes 10 and 11, and theuppermost series is connected to a suitable supply pipe 12.

On the bottom of the chamber D, a basin H is formed, into which aconducting pipe 13 leading from the lowest series of conduits, isadapted to discharge. The outlet or drainage pipe 1a for this basin hasits inlet 15 a determined distance above the bot tom, whereby the waterwill always remain at a determined height in the basin. To enable thebasin to be entirely cleaned out, however, a valved drainage pipe 16 isplaced in communication with the-bottom.

For convenience in cleaning the conduits within thechamber D, side doorsI and J may be provided retained in position in any suitable manner,those illustrated having flanges 17 on their edges which extend alongthe bottoms into flanged plates 18 on the side of the chamber D, andhave pivoted dogs 19 journaled in their tops and adapted to lock againstthe underside of the chamber.

In operation, water is continuously introduced through the inlet 12, andit will thence pass successively through the series of conduits, anddischarge into the basin, and then pass out through the outlet pipe 14into the drain. At the same time, the smoke from the boiler A, will bepassing through the chamber, and will contact with the surface of themoving water and will also be drawn downwardly and along the surface ofthe water in the basin H. The smoke will thus be sufliciently in contactwith the water to remove all the sparks therefrom and substantially allthe soot particles. It is, of course, evident that the chamber D must bemade considerably larger in crosssection than the ordinary flue, inorder not to interfere with the draft of the boiler.

As many changes could be made in the above construction, and manyapparently widely different embodiments of my invention could be made,without departing from the spirit or scope thereof, it is intended thatall matter contained in the specification and drawings, shall beinterpreted as illustrative and not in a limiting sense. It is also tobe understood thatthe language of the following claims is intended tocover such generic and specific features of the invention hereindescribed, which, as a matter of language, might be said to be includedthereby.

It may be observed that the flowing water passing through the U-shapedconduits as well as absorbing the soot particles and ex- Patented Aug.24:, 1909.

tinguishing the sparks, operates to cool the smoke, thereby condensingthe same slightly and this causes it to more easily descend to the lowerpart of the chamber and so pass downwardly without interfering with thedraft.

hat I claim as my invention is:

1. The combination with a suitable boiler and stack of a smoke flueleading from the boiler to the stack and having a downwardly turnedenlargement through which the gases are adapted to pass from the top tothe bottom thereof, a plurality of rows of open topped conduits in theenlargement, the conduits in one row being under the openings betweenthe conduits in the row above, the conduits in successive rows beingconnected together, whereby the liquid will pass from one row ofconduits to the next without flowing over the edges of the conduits, anda liquid containing basin at the bottom of the enlargement.

2. The combination with a suitable boiler and stack, of a smoke flueleading from the boiler to the stack having a downwardly turnedenlargement through which the gases are adapted to pass from the top tobottom thereof, a plurality of rows of open topped conduits in theenlargement, the conduits in each row extending zig-zag back and forthfrom one side to the other, the conduits in the successive rows beingbeneath the open spaces in the rows above, and being connected together,whereby the liquid may pass from one row to the other without flowingover the edges of the conduits, and a liquid containing basin at thebottom of the enlargement.

3'. The combination with a boiler and a stack of a flue leading from theboiler to the stack and having an enlargement therein,- a continuousseries of open-topped conduits in the enlargement, arranged in rows, the

different rows being connected by short eonduits, whereby the liquidcirculating in the conduits will not flow over the edges thereof inpassing from one row to the neat.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

JOHN MQLAUGHLIN. Witnesses RUssEL S. SMART, J. H. GLEN.

